We spend nearly a third of our lives asleep, but scientists don't agree on sleep's purpose. Scientific American contributor Joss Fong explains what we know, and don't know, about our nightly slumber.
Deadline: Jan 11 2014
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Conventional washing machines cause excessive damage and wrinkling to clothes primarily during the water removal step. With the introduc
Deadline: Jan 27 2014
Reward: $15,000 USD
The Dow Chemical Company is the leading producer of polyalkylene glycols (PAGs) used in synthetic fluids and lubricants where petroleum,
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